AMD FX 8120 OVERCLOCKING RAM AND CPU SOLUTIONS W/ MSI 990FXA-GD80

HELLO,
I am currently looking for advice and recommendations for overclocking a AMD FX 8120. I have achieved 4.3Ghz @ 1.49v without turning any cores off. I also would like any help with memory speed and timings. I bought a set of 8GB Gskill Ares @ 2133 2T-11-11-11-28 and have only been able achieve 2009mhz 2T-9-10-9-22 and the Mobo claims 2133 speed but haven't been able to figure out a settings that will achieve the rated advertised specs.
As for the 8120 I have achieved 4.6Ghz with only 4 cores active. I can achieve 4.6 with all 8 cores but core 5 or 7 become unstable after a few minutes in Prime95.
Also has anyone found a way to exceed the voltage restriction in the BIOS? It currently will not exceed 1.49v in the option menu with the 8120. I am looking for very specific in-depth configurations including CPU-NB, NB, DDR-PHY, DRAM vREF, ETC.
I have found some setting for better overclocking and have found the features that restrict CPU voltage and fluctuations an turn them on or off.
Any RAM experts advice would be greatly appreciated
This Mobo currently was used with the 8350 to achieve the new world record and this Mobo is an awesome board for the more advance user with the ability to tweak almost everything in the BIOS.
(PLEASE LOOK BELOW FOR MORE INFO AND WEBSITE REFERENCE FOR AMD CPU & RAM OVERCLOCKING )Edited by godking7 - 12/11/12 at 7:12am

Hello,
Thanks for the reply's. I haven't had any luck with MSI Software and even if the software allows it, my BIOS still won't go above it and I have had no success but I do find AMD Overdrive helpful with setting but I found the key to getting 2133Mhz on the RAM and am running it right now. The key was the CPU NB setting in BIOS and CPU NB determines the speed and latency of the RAM and L3 Cache speeds. The common voltage for CPU NB is 1.1v but can go up to 1.55v safely. I turned mine up to 1.35v and I am able to run the RAM at the advertised 2133 Mhz speed. As for the AMD memory controllers, while it is true that the controllers are not as strong as the new ivy bridge but the new FX processors are much better than previous versions and they actually performs on par and sometime better than the sandy bridge controller and now support 1866Mhz natively. I have found more issue with AMD when it comes to using quad channel RAM kits. I have alot of success on dual channel RAM and almost all the advertised speed over 1866 is for dual channel or single channel.
Here is a great guide with all the details for AMD system and what influences what and how to overclock. It helped greatly in finding my stability issues.http://sites.amd.com/us/Documents/AMD_FX_Performance_Tuning_Guide.pdf
*CPU NB: CPU NorthBridge (should not be confused with NorthBridge chipset, such as the AMD 990FX chipset)
– part of the CPU that has its own clock domain and voltage plane. CPU NB clock frequency determines the
Memory controller and L3 cache speed. CPU NB has a notable impact on overall system performance.
Voltage Range 1.1-1.55VEdited by godking7 - 12/11/12 at 5:04am